100% Private
All processing happens entirely in your browser. Your image is never uploaded to any server, stored, or shared.
Increase Image Size in KB
Need to meet a minimum file size requirement? Upload your image, enter the target KB, and download the padded file instantly, 100% client-side, nothing ever uploaded.
Upload Your Image
Drag and drop or click to select - JPG, PNG, WebP supported
Processing is 100% in-browser. Your image is never uploaded.
Guide
How to Increase Image File Size in KB
1
Upload Your Image
Drag and drop or choose any image you want to enlarge in KB.
2
Set the Target Size
Type the target file size in KB you need to reach.
3
Download the Result
Click Process and download the image at your exact target size.
Hit Exact KB Targets for Government and Job Forms
Many government portals require a passport photo or document scan to be at least a specific KB size. The tool inflates your image to the exact target without changing dimensions or adding visible artefacts.
Saves hours of trial and error when applying for visas, school admissions, or job portals that reject anything outside their narrow size band.
Benefits
Why Use This Image Size Increaser
Exact Target Size
Enter any target KB value and the tool pads the file precisely to match, no guessing, no overshoot.
Instant Processing
The file is padded instantly in your browser. No waiting, no compression, and no loss of visual quality.
Free Download
Download your padded image immediately as the same file type. No watermarks, no sign-up, no software installation required.
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FAQ
Frequently Asked Questions
Common questions about increasing image file size in KB.
Is my image uploaded to your server?
No. Everything happens in your browser using the Web File API and Blob API. Your image never leaves your device and is never sent to or stored on any server.
How does the tool increase the file size?
The tool appends null bytes (zero-value bytes) to the end of the image file. These trailing bytes are safely ignored by image viewers and decoders, so the visual appearance and quality of the image remain completely unchanged.
Will the padded image still open correctly?
Yes. Image decoders read only the valid image data and stop at the end of the image structure, ignoring any trailing bytes. The padded image opens exactly like the original in all viewers and editors.
Which image formats are supported?
JPG, PNG, and WebP images are supported. The output file is saved in the same format as the original with the same file extension.
Why would I need to increase an image file size?
Some online portals, government forms, and submission systems enforce a minimum file size (e.g. at least 50 KB or 100 KB). This tool lets you meet that requirement without changing the image dimensions, resolution, or visual quality.